...you're never going to have a legal immigration system that works if you grant amnesty.

Obviously I don't agree with everything he [Donald Trump] says. There's a lot that we have a difference of opinion on. But we can't ignore that he's touched on some issues that people are concerned about. If you look at the statements he made this week, obviously I think he made them partially to recapture the limelight after having lost it.

Donald Trump is a world-class con artist. He conned all these people that signed up for Trump University. Now he's trying to do the same thing to Republican voters. He's trying to convince them that somehow he's the guy that is going to stand up to illegal immigration, but he hires illegal immigrants, that he's fighting for American workers, but he's hiring foreign workers for his hotels, that he's going to bring back jobs from China and from Mexico, but, in fact, he's creating jobs in China and Mexico, because that's where all of his suits and ties that he sells are made.

I want immigration reform to pass, I want people to be able to come out of the shadows.

Donald Trump is not going to be the nominee, because we are not going to allow - people will wake up and we're not going to allow a con artist to take over the party of [Abraham] Lincoln and [Ronald] Reagan.

Even today with the problems that we face, who would you rather be? Which country would you trade places with?

And I think for some - not all - but for some Democrats, the issue of immigration is better politically if they just leave it the way it is now because they can use it against Republicans.